TDA7492E Datasheet, PDF (9/24 Pages) STMicroelectronics – 79 W + 79 W dual BTL class-D audio amplifier

TDA7492E
3.3
Electrical specifications
Electrical specifications
Unless otherwise stated, the results in Table 5: "Electrical specifications" below are given
for the conditions: VCC = 26 V, RL= 6 Ω, ROSC = 33 kΩ, f = 1 kHz, GV = 20.8 dB and
Tamb = 25 °C.
Symbol
Table 5: Electrical specifications
Parameter
Condition
Min. Typ. Max. Unit
VCC
Supply voltage for pins
PVCCA, PVCCB, SVCC
-
7
-
26 V
Iq
Total quiescent current Without LC, no load
-
40
mA
IqSTBY
Quiescent current in
standby
-
-
1
- µA
VOS Output offset voltage
Vi = 0, Av = 20 dB,
no load
20
mV
IOCP
Overcurrent protection
threshold
RL = 0 Ω
9
10 13 A
Tj
Junction temperature at
thermal shutdown
-
140 150 160 °C
Ri
Input resistance
Differential input
60
-
kΩ
RdsON
Power transistor
on-resistance
High side
Low side
-
0.2
-
Ω
-
0.2
-
GAIN < 0.25*Vdd
20.8 -
GV
Closed-loop gain
0.25*Vdd < GAIN < 0.5*Vdd - 26.8 -
dB
0.5*Vdd < GAIN < 0.75*Vdd -
30
-
GAIN1>0.75*Vdd
- 32.8 -
ΔGV Gain matching
-
-
-
±1 dB
CT
Crosstalk
f = 1 kHz
-
70
- dB
SVRR
Supply voltage rejection fr = 100 Hz, Vr = 0.5 V,
ratio
CSVR = 10 µF
-
60
- dB
Tr, Tf Rise and fall times
PWM signal 50% duty cycle -
24 40 ns
fSW
Switching frequency
Internal oscillator with
external Rosc = 33 kΩ
- 500 - kHz
fSWR
Output switching
frequency range
With internal oscillator by
changing Rosc ⁽¹⁾
450 - 550 kHz
VinH Digital input high (H)
-
VinL
Digital input low (L)
2.0 -
-
V
-
-
0.8
Function
mode
Standby, Mute, Play
STBY < 0.5 V Mute = 'X'
STBY > 2.5 V Mute < 0.8 V
STBY > 2.5 V Mute > 2.5 V
Standby
Mute
Play
AMUTE Mute attenuation
VMUTE = 1 V
60 80
- dB
Notes:
(1)_{fSW = 10}6 _{/ [(12 * ROSC + 110) * 4] kHz, fSYNCLK = 2 * fSW (where ROSC is in kΩ and fSW in kHz) with}
Rosc = 33 kΩ.
DocID027638 Rev 1
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